Here’s all you need to know to help us measure the size of Earth’s shadow during the total lunar eclipse on Jan. 20–21, 2019. The post Useful Projects for a Lunar Eclipse appeared first on Sky & Telescope.
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Here’s all you need to know to help us measure the size of Earth’s shadow during the total lunar eclipse on Jan. 20–21, 2019. The post Useful Projects for a Lunar Eclipse appeared first on Sky & Telescope.
Read More